Development and realization of algorithms for GNSS data processing
Satellite-based positioning based on GNSS signals is subject to constant changes. Modernization of the older systems GPS and GLONASS, the completion of Galileo and BeiDou, and the establishment of augmentation and regional systems like SBAS, QZSS, and IRNSS, create an increasingly complex total system. A large portion of the geodetic expertise in this field consists of algorithms for precise position determination and its realization in software. These algorithms must be updated continuously in order to handle the additional systems, satellites, and signals.
The Geodetic Institute of TU Dresden has a long tradition in GNSS algorithm and software development, e.g. for
- Carrier-phase ambiguity fixing,
- Network processing,
- Computation of area correction parameters (Flächenkorrekturparametern - FKP) and virtual reference station (VRS) observations in networks of reference stations,
- Precise Point Positioning (PPP),
- Antenna calibration,
- Quality control of code and carrier-phase observations,
- Carrier-phase multipath analysis,
- Ionosphere and troposphere modelling.
Publications:
Wanninger, L., Heßelbarth, A. (2020): GNSS code and carrier phase observations of a Huawei P30 smartphone: quality assessment and centimeter‑accurate positioning. GPS Solutions, 24:64. DOI: 10.1007/s10291-020-00978-z
Wanninger, L., Beer, S. (2015): BeiDou satellite-induced code pseudorange variations: diagnosis and therapy. GPS Solutions, 19:639–648 DOI 10.1007/s10291-014-0423-3
Heßelbarth, A., Wanninger, L. (2013): SBAS Orbit and Satellite Clock Corrections for Precise Point Positioning. GPS Solutions, 17:465-473. DOI 10.1007/s10291-012-0292-6
Wanninger, L. (2012): Carrier-phase inter-frequency biases of GLONASS receivers. Journal of Geodesy, 86:139–148, DOI 10.1007/s00190-011-0502-y
Heßelbarth, A. (2009): GNSS-Auswertung mittels Precise Point Positioning (PPP). zfv, 134:278-286.
Wanninger, L. (2008): The Future is Now - GPS + GLONASS + SBAS = GNSS. GPS World, Juli 08, 42-48.